Software - OPC
The SoftPLC runtime provides tenths of drivers incl. Modbus RTU Client and Modbus TCP Client. The read variables may be further processed in a FUPLA logic incl. PI controllers and other analogue functions, and then written back to the Modbus servers, or communicated over an OPC server to a SCADA. It works also as a protocol converter and integrator.
Modbus RTU, Modbus TCP
Free definable amount of serial (COM) or Ethernet channels with various protocols. More than 100 FUPLA analogue and digital function blocks for process logic and control functions, such as PI controllers, mathematic and goniometric functions, dewpoint calculation, heat recovery algorithm, peak shaving, time schedulers etc. Free SDK for connectivity to the SoftPLC runtime, web server with SVG graphics, web editor, OPC server and many more. See http://rcware.eu/public/rcware/softplc.
Supports OS: Windows 2000/XP/7; Variables: more than 20 000, depending on the PC performance; HMI connectivity: web server, OPC server, SDK; Debugging: ASCII/hex port monitor, logging into files, comm error variables; Engineering: Free engineering tool, Import/export of I/Os over XML